MXS System Description and Installation Manual
UM06945
© Sagetech Avionics 2022 Proprietary Confidential
Page 12 of 56
Note: If the MXS is configured for single antenna installations, a 50-ohm termination is required
on the Top antenna port.
2.8
Regulatory Compliance
Aircraft using Sagetech’s MXS Transponder need to evaluate their need to be compliant with 14 CFR
91.215, 91.225, and 91.227. While in airspace with transponder equipage requirements specified in 14
CFR 91.215, MXS must be maintained to 14 CFR Part 91.413. While in ADS-B out airspace specified 14 CFR
Part 91.225, MXS must be configured to meet requirements of 14 CFR 91.225 and 91.227.
For MXS to be compliant with the ADS-B out requirements of 14 CFR 91.225 and 91.227, a compliant
position source must be used. See section 4.2 for more information.
To meet 14 CFR 91.225 and 91.227 with no limitations, active in-flight control is necessary. The Sagetech
provided User Interface GUI can be used or the flight computer can be programed to communicate with
the MXS via the Sagetech protocol defined in ICD02373. Section 7 details the power up and configuration
process using the Sagetech provided MX Com Test GUI.
Additional Guidance for ADS-B out installations and approvals can be found in AC-20-165B and for ADS-B
in applications reference AC 20-172B.
